Sto Ewi Systems for Refurbishment Brochure

7/24/2019 Sto Ewi Systems for Refurbishment Brochure

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| Facade | External Wall Insulation |

External Wall InsulationFor Housing Refurbishment


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Energy Companies Obligation (ECO)For social housing projects.

The UK Governments target to reduce carbon

emissions by 80% before 2050 is driving

todays construction policy. The majority

of buildings that will be in use by 2050 are

already in use today. In total, these buildings

account for around 40% of the UKs annual

carbon emissions.

On average, 35% of the energy used to heat

our homes is lost through the external walls.Signicant energy and carbon reductions can be

made by retting homes with more energy efcient

technologies. External wall insulation (EWI) is one

such technology, protecting the fabric of your

home as well as improving energy efciency.

The Energy Companies Obligation (ECO) is a

government funded scheme designed to:

Reduce UK energy consumption.

Support those living in fuel poverty and low-

income households.

Improve hard-to-treat solid wall properties.

ECO will run alongside the Green Deal from

January 2013 until March 2015. It will fund energy

efciency improvements worth around 1.3 billion

every year.

Hard to Treat Homes

There are an estimated 7 million homes in the

UK built with single skin, solid walls. These so

called hard-to-treat homes require some form of

insulation to reduce heat loss. With no cavity to ll,

cavity wall insulation is not an option.

Social Housing providers are well placed to attract

ECO funding for their hard-to-treat stock by

achieving economies of scale. EWI is the most

effective, long term solution to improve the thermal

performance and weather protection of housing. It

is an appropriate insulation method for both solid

wall and cavity wall construction.

2 | External Wall Insulation for Housing Refurbishment The technical specications and information on the products contained in the Technical Data Sheets and system descriptions/approvals must be observed.


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Carbon Saving Communities Obligation

15% of suppliers funds are to be used to

upgrade hard-to-reach, low-income households

in rural communities.

Affordable Warmth Obligation

Provides heating and insulation measures to

low-income consumers living in private tenure

properties that receive particular means-testedbenets, e.g. the elderly, disabled and families.

Carbon Saving Obligation

Covers the installation of measures like solid

wall and hard-to-treat cavity wall insulation,

which ordinarily cannot be nanced solelythrough the Green Deal.

ECO will be funded by energy suppliers who have 3 obligations:

External Wall Insulation for Housing Refurbishment | 3


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Why externally insulate?Protect your investment

Improving the thermal efciency of buildings

is economically, socially and environmentally

advantageous.

There are three main insulation methods:

Internal wall insulation

Cavity wall insulation

External wall insulation

Of the three, Sto maintains that external wallinsulation is the best long term solution to protect

your interests. Stomix systems demonstrate signicant

benets when it comes to thermally insulating and

protecting the fabric of your property, including:

1. Signicantly reduce heat loss and energy

consumption

If two or more uninsulated materials meet within

a substrate, heat can be transferred from one

material to the other. This phenomenon is known

as thermal bridging, moving from hot to cold and

typically interior to exterior. The more thermal bridges

there are, the less energy efcient the building.

External wall insulation minimises or removes such

occurrences and greatly simplies the detailing to

achieve high thermal performance. Less energy is

needed to warm the building and heat is retained

for longer, creating a more comfortable interior

environment.

The technical specications and information on the products contained in the Technical Data Sheets and system descriptions/approvals must be observed.

Thermal image showing domestic heat loss. The house on the left has been wellinsulated, while the house on the right is poorly insulated.

2. Minimise condensation, damp and mould

Damp and mould growth are the cause for a number

of respiratory and other health related issues. Both

are caused when the internal room temperature falls

below the dew point. Cold spots on walls cool the air

to a point where the moisture vapour forms a liquid,

forming damp patches. This process can also lead to

mould growth.

Correctly installed EWI systems protect the entire wall,

maintaining a warm and dry substrate. Protected in

this manner, substrate temperatures are maintained

above the dew point. This effectively deals with

damp, mould growth and other environmental issues.

Cavity Wall Insulation

Interior Facade

External Wall Insulation

Interior Facade

Internal Wall Insulation

Interior Facade

4 | External Wall Insulation for Housing Refurbishment


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3. Protect properties from weather damage

An insulated, rendered facade protects the substrate

from frost and moisture damage. This signicantly

reduces the risk of high maintenance and repair costs.

4. Minimise costs and disruption

Externally insulating will not encroach into the interior

of your properties, all work is external. This removes

the need for signicant internal refurbishment and

will not reduce interior room dimensions. There is also

no need to temporarily rehouse your tenants. Such

disruptions are often unwelcome and the associated

costs need to be factored in when selecting an

insulation system.

EWI systems protect the wall from rain, but remainvapour permeable so moisture can escape.


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Why Stomix?Selecting the right partner.

A subsidiary of Sto, Stomix manufactures

and distributes EWI systems ideal for the

ECO market. Originally developed for Eastern

European climates, the Stomix systems have

proven themselves capable in demanding

environments whilst keeping costs low.

The Sto Group

Sto is a leading global building products

manufacturer with origins traced back to 1835. Thegroup is active in over 87 countries, with close to

5,000 staff and a 1 billion sales turnover. Recognised

globally as the render and EWI quality benchmark,

Sto innovates through technological leadership in

all of their core markets, with heavy investment in

Research & Development.

Support from start to nish

Since 1955, Sto has been manufacturing and

supplying external wall insulation systems. Over 450

million m2have been applied worldwide. We offer

unparalleled experience, knowledge and expertise in

the design and manufacture of durable solutions.

The technical specications and information on the products contained in the Technical Data Sheets and system descriptions/approvals must be observed.6 | External Wall Insulation for Housing Refurbishment

Product warranties you can trust

Sto offers a standard company product warranty

of 10 years from the date of purchase. During the

warranty period, Sto will ensure that:

Products are of satisfactory quality to meet the

needs of the specication.

Products are of a standard which is appropriate for

the purposes for which they have been and are to

be used.

Only Sto-trained applicators are able to installStomix external wall insulation systems. A list of

trained installers is available from Sto (T: 0141 892

8000)

Advice is available regarding the provision of

a latent defects and insolvency insurance for

longer terms of warranty. Please contact Sto for

information.

Technical Support

When you specify Stomix products and systems, you

receive professional consultancy and advice on all

aspects of the project.

Sto Technical Consultants for Refurbishment can

guide you on the most suitable system to meet

your design and objectives. They can attend pre-

start meetings and will be your rst port of call

for any questions, colour visualisations or samplerequirements. You can be condent that they will see

the project through smoothly from start to nish.

Sto Technical Advisors can meet you on-site to

provide support and to ensure that Stomix products

are installed to specication. Each Sto Advisor is a

qualied tradesman and an expert in their eld.


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Recycling

As a company committed to protection of theenvironment, we are members of a compliance

scheme that issues Packaging Recycling Notes (PRNs)

for every tonne of our waste that is recycled.

Our EWI insulation board suppliers offer a waste

collection service for uncontaminated offcuts of

materials. These are collected and then recycled into

new products.

The installer has a responsibility under the Site Waste

Management Plans to ensure that the packaging is

properly disposed of. We do everything we can to

keep the amount used minimal for safe handling and

transportation.

Stomix Systems | StxTherm

With Ofgem and BBA approvals, we wish to offer

our ECO customers the most comprehensive range of

building systems. These systems use Stomix products

to offer cost-effective, durable refurbishment

solutions, tailored for all types of social housing stock.

Considering the market driving factors, we have

developed three Stomix external wall insulation

systems for the ECO market:

StxTherm Eco

An economical system for large scale refurbishment

projects

StxTherm Robust

A system offering traditional nishes suitable for

strict planning authority regulations

StxTherm Protect

A system ideal for high rise projects and re safety

requirements

Applicator Training

To ensure a good quality build, only Sto trained

contractors may install Stomix external wall insulation

systems. Our experienced trainers offer workshop and

lecture-based training courses at our new Midlands

distribution centre and also at the Sto Glasgow and

Basingstoke sales centres.


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StxTherm EcoCost-effective solution for larger projects.

StxTherm Eco is a silicone rendered system suitable

for low to medium rise buildings such as terraced or

semi-detached housing. Our most economical EWI

system, it should appeal to social housing providers

managing a huge property portfolio.

Vapour permeable and weather resistant

Silicone nish provides improved moisture shedding

properties and built-in resistance to algae growth

The silicone nish render comes in a range ofpastel shades to harmonise with the surrounding

environment (see page 17 for colour range).

Typical Orlit property:Before (right) and after (top)

1. Substrate

2. Adhesive mortar3. Grey expanded polystyrene insulation board

4. Mineralic reinforcing coat

5. Glass bre reinforcing meshEmbedded into the mineralic reinforcing coat

6. Primer

7. Decorative silicone render nish

1 65432 7



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StxTherm RobustTraditional nishes for strict local planning requirements.

StxTherm Robust is a low-to-medium rise system that

offers either a dash or brick slip nish. These more

traditional looking nishes are ideal for projects in

areas with tighter planning regulations.

Available in a heavy duty dry dash render nish or

synthetic brick slips.

Further improved thermal performance through the

use of grey EPS insulation boards.

1. Substrate

2. Adhesive mortar3. Grey expanded polystyrene insulation board



6. Dash or brick slip nish

1 65432

Typical Cornish Type 1 propertywith brick slip nish.


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StxTherm ProtectThe high rise solution.

StxTherm Protect is an EWI system designed to meet

strict re protection requirements. It is particularly

suitable for the refurbishment of high rise housing

blocks and offers a wide range of nish design

options.

Non-combustible mineral bre insulation for

outstanding re performance.

All Stomix nish options are available:

Silicone resin render nish Dry dash render nish

Brick slips.

Typical high rise property:Before (Right) and after (Above).

1. Substrate

2. Adhesive mortar3. Mineral bre insulation board



6. Primer

7. Silicone render, dash or brick slip nish

1 65432 7



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Local PlanningColour & Finish Visualisations.

Architectural drawings or photographic images

of a building can be modied to show a selection

of possible colour combinations that could be

applied.

The colours selected, and judicial design choices as to

which parts of a row of terraced houses to apply the

various colour shades, can make a dramatic difference

to the aesthetics of a building.

The Sto colour design service is particularly helpful for

refurbishment projects such as social housing. Colour

combinations and where they are applied can make a

building appear longer, shorter, wider, as one building

or as several. The appropriate selection of colours on a

building facade can also have a positive effect on the

wellbeing of occupants.

The StoDesign service can speed up negotiations with

planning authorities and tenants by providing a range

of possible options. If planning allows, you may even

wish to let your tenants select their preferred colour.

Speak to Sto about our StoDesign services for your

next project.

Typical Cornish Type 1 property. Original (top), visualisation with brick slip nish(centre) and visualisation with white render (bottom)


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Render FinishesFor every climate and design.

When refurbishing a property, the

chosen nish can signicantly change,

and even enhance, the aesthetic of

the building.

The choice of nish can depend on a

number of variables, such as:

Planning authority policy.

Local weather conditions.

Building orientation.

Spray application

Stomix render nishes can be spray

applied. Spray application is signicantly

faster than traditional methods of

application, with less waste material and

site disruption. Combined, signicant cost

benets can be realised.

Silicone render nish

Combining the benets of mineral

and synthetic binders, silicone renders

offer excellent weather protection,

even in aggressive atmospheres.

High water repellency

Vapour permeable

Dirt resistance

Through-coloured

Anti-fungal

The even, stippled texture gives the

nal nish a atter aspect compared

to a smooth, oated surface which can

highlight even minor trowel marks. The

texture can also help to promote effective

water shedding to avoid algae build-up.

Stomix silicone render comes in a choice

of Natural White or 22 colourfast shades

from the StoColor System.

31116Natural White 31307 31308

31309

32135

35209

36324

31409

32235

35237

36412

31416

32237

35411

36416

32131

33132

36207

37104

32134

33137

36217



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Dash Render Finish

In areas of heavy rainfall or heavy

trafc, we recommend a nish with a

rougher texture, such as a Dry Dash.

A rough surface breaks up the ow of

running water and avoids concentration

of moisture in one area, minimizing

the risk of moisture penetration andsubsequent damage. Dash render is also

highly resistant to abrasion.

Classic Beige Marble

Polar Red & White Ashton Cream

Huntingdon Beige

Harvest Barleycorn

Polar White Nordic

A full range of decorative proles and rustications are

available to help refurbished houses match the surrounding

built environment. They are lightweight, provide excellent

weather resistance and are easy to shape and install.

The range includes standard designs, or they can be customformed to match existing proles.

Decorative, lightweight rustications

Brick Slips

Flexible, lightweight slips made from

acrylic render to simulate brickwork.

Brick Slips allow for the installation of an

external wall insulation system without

having to forego the appearance of a

characteristic brick facade, especially

ideal for conforming with local planning

restrictions where required.

They offer a long life span with good

resistance to weather, mechanical stress

and impacts. They are easily cleaned and

require very little maintenance.

Brick Slips are available in 6 standard

colours plus 6 shades of mortar to match

the surrounding streetscape or existing

brickwork.

They come in standard 215 x 65mm brick

size or can be custom-designed to match

other brick and tile designs, including

terracotta tiles.

2081B

2083B

2079B

2056A

2059A

2062A

2082B

2080B

2078B

2057A

2060A

2063A

Brick Slip Options Adhesive Mortar Options


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Detail DrawingsThe devil is in the detail.

When refurbishing a house, numerous

opportunities for cold bridges arise.

Thermal bridging is a phenomenon

where heat can be lost where

components with higher thermal

conductivity penetrate the insulating

layer of the building.

Any material interfaces, such as windows,

doors and eaves, can signicantly impacton the overall thermal efciency of the

building.

Whether eaves proles, window reveals

or sills, installing the correct system details

will ensure that the building continues to

be thermally efcient in the long term.

Below DPC treatment


Essential for prevention of water

penetration and maintaining thermal

performance below DPC level.



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Eaves - verge trim

Window sill

For properties where the existing eaves do

not sufciently protect the new insulation

system.

Most sills will require a new oversill to

ensure a professional nish and adequate

protection of the new insulation system.

External Wall Insulation for Housing Refurbishment | 15The drawings on this page are illustrative details giving the general concept o f how the system interfaces with other construction components.The drawings should not be used for construction purposes. Full details are available on request.


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Partially insulated

window head

Intersection with an alley


Detail for the treatment at the top of

window openings.

Detail of insulation pattern where the side

of a house to be treated forms part of an

alleyway.



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Stop End - Rendered Return

Flue penetration

The best way for nishing a system where

the adjacent property is not to be treated.

Detail of the insulation treatment around

ues and other penetrations through the

insulation layer.

External Wall Insulation for Housing Refurbishment | 17The drawings on this page are illustrative details giving the general concept o f how the system interfaces with other construction components.The drawings should not be used for construction purposes. Full details are available on request.


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AccessoriesA systematic approach.

Attention to detail is key to a successful

refurbishment happy tenants with lower

energy bills, a much improved thermal

performance and good looks that will last.

Sto offers complete external wall insulation

systems, including a selection of highest quality,

specially fabricated accessories, such as beads,

proles, mesh and tracks. These have been

developed for durability and to suit typical buildconditions within the refurbishment sector.



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Mesh

Stomix glass bre mesh is an essential

component of the insulation system,

providing strength and helping to

prevent crack formation.

Starter Tracks

Starter tracks provide a sound, level

base from which to work. 2.5m long

and in widths to suit all insulation

thicknesses. Use together with clip-on

nosings to give a clean drip edge to

work from.

Full System Stop Beads

Provide a clean edge when the

insulation system has to be

terminated between semi-detached

or terraced dwellings.

Render Stop Beads

Used where a physical delineation

between semi-detached or terraced

properties is required or where

adjoining properties differ in nish or

colour.

Corner beads

Provide additional strength and

reinforcement on external corners to

prevent cracking.

Window reveal beads

Create a seal to the window frame,

terminate the render and provide

a self-adhesive surface to which

window protection can be xed.



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Head Ofce

Sto Ltd.

2 Gordon Avenue

Hillington Park

Glasgow G52 4TG

Tel +44 (0)141 892 8000

Fax +44 (0)141 404 9001

[email protected]

www.sto.co.uk

Southern Ofce & Distribution Centre

Sto Ltd.

Antura

Kingsland Business Park

Wade Road

Basingstoke RG24 8EN

Tel +44 (0)1256 332770

Fax +44 (0)1256 810887

Midlands Training & Distribution Centre

Sto Ltd.

Unit 700

Catesby Park

Kings Norton

Birmingham B38 8SE

Tel +44 (0)121 459 5149

Fax +44 (0)121 459 0632

Sto Ewi Systems for Refurbishment Brochure

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